Simple CPU usage monitoring

CPUUsage.ps

$usageQueue = @() 

while ($true) { 
    $currentDateTime = Get-Date -Format "yyyy-MM-dd HH:mm:ss" 

    $cpuUsage = Get-Counter '\Processor(_Total)\% Processor Time' 
    $cpuUsageValue = $cpuUsage.CounterSamples.CookedValue 
    $usageQueue += $cpuUsageValue 

    if ($usageQueue.Count -eq 13) { 
        $usageQueue = $usageQueue[1..12] 
    } 

    $oneMinAvg = 0 
    foreach ($usage in $usageQueue) { 
        $oneMinAvg += $usage 
    } 
    $oneMinAvg /= 12 

    $cpuUsageValueStr = "{0,6:N2}" -f $cpuUsageValue 
    $oneMinAvgStr = "{0,6:N2}" -f $oneMinAvg 

    Write-Host "$currentDateTime, CPU Utilization: $cpuUsageValueStr%, 1min Avg: $oneMinAvgStr%" 
    Start-Sleep -Seconds 5 
}